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Hi,

Thank you for looking my question.

I used some cases which equipped with governs and have carried out some simulations. I observed that the after disconnecting the load/generator, the frequency response in my case is the result of the inertial response and preliminary control, since the frequency never goes back to the initial value and stay at somewhere else.

How can I simulate the secondary frequency control in pss/e, to increase the output of synchronous generators reasonably then make the frequency go back to the initial value?

sorry to ask the basic question. Any help would be appreciated.

Thanks, Gary